Idk what to tell ya about the inaccuracy beyond that you might be due for a phone and/or cell carrier upgrade.

As for looking at the phone? If a person needs to do that, we're talking 1-2 seconds maximum to be able to see it. Probably less if it's just "see how long before their exit is"

Most people would just relying on the lady telling you this information as needing to even see the phone.

Not to mention that for most modern cars, you don't even need to have a phone to have a functioning GPS. It's a rpetty common feature that's going to be more common than having a traditional radio within a decade of now.

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>Not every issue has a tech solution.

Except for every solved problem is the entire history of humanity, sure.